ConnectIOException: JRMP

Hi,
I've got a problem with my program. I'm using Tomcat and Java 1.4.2_01 on Redhat. The program works fine, but sometimes I get the following exception and I must restart my program:
java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is:
     java.net.SocketTimeoutException: Read timed out
     at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:274)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
     at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:101)
     at acme.core.Session_Stub.getSprache(Unknown Source)
     at acme.servlet.SessionTestServlet.service(SessionTestServlet.java:332)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:549)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
     at java.lang.Thread.run(Thread.java:534)
Caused by: java.net.SocketTimeoutException: Read timed out
     at java.net.SocketInputStream.socketRead0(Native Method)
     at java.net.SocketInputStream.read(SocketInputStream.java:129)
     at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
     at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
     at java.io.DataInputStream.readByte(DataInputStream.java:331)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:215)
     ... 34 more
Does anybody know a solution?
Perhaps interesting: there are many visitiors a day.
Is there any bug in Java 1.4.xx? With Java 1.3.x it worked better.
Thanks for your help, Christoph

Hi
I think u r hitting a bug.... it only surfaces under load...
The 1.3.1_x version u r using? Is it _11 or newer? Now its _13
Try the 1.4.2_05

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     at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
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JMXServiceURL serviceURL =
new JMXServiceURL(uri.getScheme(), uri.getHost(), uri.getPort(),
"/jndi/weblogic/management/mbeanservers/runtime");
Hashtable h = new Hashtable();
h.put(Context.SECURITY_PRINCIPAL, "system");
h.put(Context.SECURITY_CREDENTIALS, "ejb2come");
// String[] jmxCredentials = new String[]{ "system", "ejb2come" };
// h.put(JMXConnector.CREDENTIALS, jmxCredentials);
h.put(JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES,
"weblogic.management.remote");
h.put(Context.PROVIDER_URL, args[0]);
// h.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
h.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
// InitialContext ic = new InitialContext(h);
// ic.lookup("weblogic/management");
JMXConnector connector = JMXConnectorFactory.connect(serviceURL, h);
MBeanServerConnection connection = connector.getMBeanServerConnection();
NOTE this was with weblogic 91--

ConnectIOException: JRMP

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